Sash-lock.



F. T.- ROBINSON.

SASH LOCK.

APPLICATION FILED AUG.6. 1917.

Patented Apr-.15, 1919.

JV/ w E l? v mnnmmi mmmmmm IN VE/l TOR A Tron/v5) FRANK T. ROBINSON, 0F LOUISVILLE,

KENTUCKY.

EASE-LOCK.

Specification of Letters Patent.

Patented Apr. 15, 1919.

Application filed August 6, 1917. Serial No. 184,642.,

To all whom it may concern:

Be it known that I, FRANK T. ROBINSON, a citizen of the United States, residing at Louisville, in the county of Jefferson and State of Kentucky, have invented a new and useful Sash-Lock, of which the following is a specification.

This invention relates to means for looking window sashes against movement, and has for an object the provision of means whereby both sash may be locked in a closed position, or either sash, or both sash open or partially open, preventing any movement of the sashes, the invention however may be found of service under other conditions.

With the foregoing and other objects in view, the invention consists of the novel construction illustrated in the accompanying drawing, which forms a part of this specification, wherein is set forth, an embodiment of the invention, but it is to be understood that such changes and modifications may be resorted to as come within the scope of the claims appended hereunto.

In the drawing, wherein similar reference numerals designate like parts in the several views: Figure 1, is a side elevation of an embodiment of the invention as applied to the lower sash of a window and binding against the window frame; Fig. 2, a plan view, showing the device so applied that it may be engaged with the upper sash; Fig. 3, a perspective view of the standard; Fig. 4, a central longitudinal section through the standard, with some parts omitted.

Referring now in detail to the drawing, the reference numeral 10- designates a window frame within which are hung upper and lower sash -11, 12 which are retaine in proper relationship by means of inner and outer stops 18, 1&- and parting strips 15.

My improved sash lock comprises a standard -16-, formed preferably of a single piece of flatmetal doubled over and shaped to form a bearing -17, which is smooth interiorly, the two end portions being extended in juxtaposition along a radial line for a suitable distance from the bearing, forming a stem, or support therefor, they are then bent outward at right angles forming a base -19, which is provided with perforations -20 for the passage of screws, by means of which it may be attached. A screw-threaded bolt -2l mounted in the bearing 17, is adapted to be moved longitudinally and to have a slight lateral movement therein. The bolt has a head 22 on one end, and a contact piece, or foot 23- on the other end. A thumb nut -2 iis positioned onthe bolt between the foot and the bearing, and a resilient member of suitable construction such as a coil spring -25 is disposed between the bearing and the head of the bolt. The thumb nut may be a milled nut as shown in Fig. 1, or a butterfly nut as shown in Figs. 2 and i.

No mechanical'skill is requiredto apply my sash lock, it being held in place by means of screws passing through the base into the top rail of a lower sash. .In operation, the bolt is advanced by pressure of the operators thumb upon the head of the bolt, with the forefinger, the nut is then given a twirl bringing it against the bearing, thus holding the foot firmly against the opposing surface until the foot binds on the frame, or upper sash, as the case may be. With the foot firmly pressed against the opposing surface, the slightest movement of the sash carrying the lock will cause the bolt to cant, owing to the lateral play it has in the bearing, and the edge of the foot will bite into the surface with which it contacts, and preventifurther movement. I consider it advisable to use a lock on each side of the sash, one to bind against the frame, and the other against the upper sash. If it is desired to secure either or both sashes partially open, they are located at the desired point, and then the lock adjusted, thereby immovably securing both sashes as desired.

Having thus described my invention so that any one can make and use the same, I claim 1. In a device as characterized, a standard carrying a bearing a screw-threaded bolt mounted in said bearing and adapted to have longitudinal and lateral movement therein, a nut positioned on the bolt on one side of the bearing, and a coiled spring disposed about the bolt on the other side of the bearmg.

2. In a device for locking the sashes of windows, a standard adapted to be secured to the upper rail of the lower sash, said standard being formed of a sheet of metal bent into tubular form at its center forming an interiorly smooth bearing then extending in two parallel juxtaposed side members, said side members then bent outward so as lateral movement therein, a coil spring dis- -bolt between the head posed about said thereof and said bearing, a nut disposed on the bolt on the opposite side of the bearing from said spring and a fixed contact foot on the bolt. 7

. 3. In a device as characterized, a stand ard, a bearingdisposed thereon in a plane parallel with the base thereof, a screw threaded locking bolt slidably mounted in and projecting bearing, a head on one end of said bolt and adapted for the application directly'thereto of manual pressure, a fixed cont-act foot on the other end of the bolt, the bolt having a slight lateral movement in the bearing which allows the foot to cantslig'htly per mitting the edge thereof to bite into the surface with which it contacts, and a nut disposed on the bolt.

FRANK T. ROBINSON.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G. r

beyond the ends of said 

